Non-print and non-compute mechanism for typographical computing-machines.



G. WALKER.

NON-PRINT AND NON-COMPUTE MECHANISM FUR TYPOGRAPHICAL COMPUTING MACHINES. APPLICATION FILED IUL'Y 25. 1912.

1,13,161. Patented May 4, 1915. A

3 SHEETS-SHEET I.

G. WALKER. NON-PRINT AND NON-COMPUTE MECHANISM FOR TYPOGHAPHICAL COMPUTING MACHINES.

APPLICATION FILED IULY 25,1912. 1,138,161 Ptented May 4, 1915.

3 SHEETS-SHEET 2.

MOM Q75 G. WALKER. I NON-PRINT AND NON-COMPUTE MECHANISM FOR TYPOGRAPHICAL COMPUTING MACHINES.

y APPLICATION FILED )ULY25. 1912.

1 1 38, 1 6 1 Patented. May 4, 1915 3 SHEETS-SHEET 3.

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UNITED STATES PATENT OFFICE.

GEORGE WALKER, 0F NEWTON CENTER, MASSACHUSETTS.

NON-PRINT AND NON -COMPTE MECHANISM FOB TYPOGRAPHICAL COMPUTING- MACHINES.

-computing machines, and its object is to provide mechanism b Awhich the ordinary and usual operation o the machine from the keyboard will cause the machine to print without computing, or to compute without printing, at the will of the operator, thus providing a machine adapted for both computing and'printing which may be instantly transformed into.a non-printing computing machine, or a non-computing printing machine, as desired.

The Ainvention in its broadest aspectfis applicable to t pographical computing machines generally, but for the purpose of'illus'- tration I will show it as applied to the typographical computing machine described in lLetters Patent of the United States No.

-996,173, issued to me June27, 1911, and

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more particularly to that form of said machine described at page 30 of said patent beginning at line 65. For convenience I will use in 'the present specification the same reference numerals as are used in my said former patent so far as they are applicable.

In the accompanying drawings, which illustrate certain embodiments of the inventi0n,-Figure 1 is a side View, partly in ver- 'tical longitudinal section through the inachine, showing my new non-printing and non-adding mechanism, and such parts of the typographicalcomputing machine as are necessary to an understanding of the construction and operation of the present invention; Fig. 2 is a side elevation viewed from the reverse side of Fig. 1, showing certain of the operating parts embodyingmy invention; and Fig. 3 is a view similar to that shown in. Fig. 1 but illustrating certain modifications in the invention to adapt it to a modified form of the computing machine.

It will be understood, by referring to my said Patent No. 996,173, that when a numeral key is depressed crank 560 is rotated, pulling downward bar-561 and causinglatch 562 to lift lock 18 out of the teeth of gear Specification of Letters Patent.

'case' affecting the other.

Patented May 4, 1915.

Applicati on led July 25, 1912. Serial No. 711,503.

wheel 1, and set pawl 11A into the teeth of said gear wheel by the swinging of'tail piece 18". Pawl 11^ is then swung by the further depression of the key, about shaft i as an axis, thus rotating gear wheel l and type wheel or numeral wheel 3 a distance corresponding to the value of the key being depressed, thereby performing the addition. At the same time type plate 37 Will Y be swung upward on shaft 4 as an axis until the type corresponding to the value of the key being depressed stands opposite the printing hammei` 109, and hammer 109 will be operated to print the amount added by striking said typ on type plate 37. The mechanism for operating said hammer 109, comprises rod 33--36 which ispulled toward and left by crank 560 when a key of the\key .board i s depressed, swinging piece 103 in the same direction and lifting latch 106 which engages arm 1092on hammer 109, causing the hammer to be thrown back toward the right until the nose of latch 106 sli s off arm 1092, whereupon the hammer Wil fly forward under the influence of its spring to print from the type plate the amount corresponding to the,value of the key depressed. The parts thus far described may all be of the same construction and mode of operation as the corresponding parts described in m) said former patent. i

In order to render the machine a nonprinting computing machine or anon-computing printing machine, I provide means for disconnectingv or disabling at will 'the train of mechanism for actuating the main gear wheels 1, or the train of mechanism for actuatingthe hammers, without in either As the actuation of gear wheel 1 depends upon the movement of parts 18 and 18A by latch 562, the elimination of the adding or computing functions of the machine may be accomplished by dis-v Connecting or disabling the latch-562'; and,`

as the actuation of the hammer. 109 dependsA` upon latch 106, the elimination of the printing functions may be accomplished by disconnecting or disabling the latch 106. These two results are preferably 'accomplished by a single hand-operated lever, controlling the` following mechanism (Figs. 1 and 2) 705 35 A be performed, but none of the other' .parts of -the machine will be affected, and eonsc-v 'qucntly the amount represented by thc key just inside the opposite side frame.

tened solidly on said shaft 70S just insidel the sideframc ll', and a duplicate of said arm 709 is fastened solidly on said shaft `Rod 710 (Fig. 1) extends between said arm 7 0S) and its duplicate, across the ltails 502A of all the latches 562, said rod 710 having its ends secured in the ends of said arms. It will be understood that there. is a latch 562 for each column of the machine.

lVhen hand lever 705 is thrown forward in the direction of the arrow, shaft 708 will be swung in the same-direction by link 706 and arm 707. The rocking of shaft 70S will swing arm 709 and its counterpart at the other side of the machine, thus 'moving rod .710 against the projectingr tails 562A of all the latches 562, thereby swinging all of latches clear of the cndsof parts 18A. under-these conditions a numeral key is depressed, latch 562 will not act to set pawl 11"?, and therefore when the pawls 11A are swung about their aXis 4, and the type plate 37 is correspondingly'-elevated to printing position, the gear wheels 1 and type wheels 3 Will not be rotated and no addition will 'depressed will `be printed. Thus the ma- -chinezremains a printing machnehut not an adding orcomputing machine. The lower arm of said hell crank lever 705 is connected by bar v711 with arm 712, which is fastened solidly to shaft 713 outside' of the lside frame B. Shaft 713 extends through side frame B into the opposite, similar side frame, and turns in said side frames. Arm 714 is fastened solidly on said shaft 713 just inside of side frame B', and 'a duplicate thereof is fastened to said shaft just'inside of the opposite side frame. Connecting said arm 714 .and its counterpart, is a rod 715 extending under the noses of the several hammer operatinglatches 106.

TWhen lever arml 7051's thrown backward in the direction opposite to that indicated by the arrow, itA u ill lift link 711 arm 712, thereby rocking shaft 713 and swi ging arm 714 and its counterpart upward, causing rod 715 to press against thcnoses of all the latches 10G and swinging them clear of the arms 1092.v lf now a key is tlepiessecl,`tho amount .represented thereby will'he added on the adding wheels or type wheels, but

' as the latchesltl` cannot operate hammers 109, no printing will be performed. Thus 1 the machine becomes an adding, but a nonprinting machine. It will be observed that the swinging of said hand lever in 'the direction of the arrow, for disabling the computing mechanism, swings the rod 715 away from latches 106, leavingthe printing mechanism unaffected; and similarly the swinging of the hand lever in the direction opposite to the arrow, foir disabling the printing mechanism, swings the rod 710 away from the tails of latches 562, leaving theadding or computing mechanism unaffected. i

ln Fig. 3, I have illustrated my non-add, non-print device adapted to a machine having modified mechanism for operating the adding w'heels. Bar 561 is changed in form as shown, having a shoulder near its upper end to engage and actuate the upper arm of part 18A, and a shoulder at its lower end to engage latch 562-", normally heldl in the Aposition shown in the drawing by spring 560. When a key is depressed, swinging crank 560 and latch 502A downward. bar 561 is pulled down, thereby lifting lock 18 and setting pawl- 11A. Other details of this modified mechanism form the subject of, and are more fully described in, another application to be 'filed simultaneously herewith,

Y and are not material to an understanding of the present invention. By disabling or disconnecting latch ,5G21 the operation of the adding or computing wheels will be cut out. This is accomplished as followsz' Rod 706-A connects lercr 7 05 wi th arm 7 07 which is fast on shaft 7081*. Arm 709A is fastened solidly on said shaft 705% inside of side frame BV and is connected by rod 720 with the upper arm of bell crank lever 721, which is fast on'r shaft 722 extending across the machine and journaled in the side frames. A duplicate of the lower arm of bell crank 721 is fastened on shaft 722 just inside the side frame of the machine opposite to 721. Rod

723 extends between said bell crank 721 and said duplicate arm` across the projecting tail, pieces of all the latches 552B. `Prien the lever 705 is thrown forward in the direc tion of the arrow, it will press theA rod '723, by means `of the above described connecting mechanism, Aagainst the tails of all the latches 562B thus moving themclear of the shoulder on bars 501, thereby cutting out the adding mechanism. but leaving the machine in condition to print.

I claim: l

- 1. In a typographical computing machine, a series of numeral wheels, mechanism' to actuate said numeral wheels, printing devices, mcchanism to actuate said printingr devices, a shipper, connections-between said A shipper and said hnumeral wheel actuating mechanism adapted to disable the latter, and i connections between said shipper and said printing device actuating mechanism adapt` ed to disable the latter, both of said disabling connections being controlled by said single shipper, and each being adapted when operated to render inoperative its corresponding actuating mechanism without affecting the other actuating mechanism.

2. In a typographical computing machine, a series of numeral wheels, mechanism including a set of latches normally in operative position to actuate the numeral Wheels, printin hammers, mechanism including a set of atches normally in operative position to actuate the printing hammers, and means to move the latches of one of said mechanisms to inoperative position Without affecting the other.

In a typographical computing machine,

a series of numeral Wheels, mechanism including a set of latches normally in operative position to actuate the numeral Wheels, printing hammers, mechanism including a set of latclle'sl normally in operative position to actuate the printing hammers, and means operated by a single shipper to move the latches of either of said mechanisms to inoperative position Without affecting the other.

4. In a typographical computing machine,

a series of numeral Wheels, mechanism including a set of latches normally in operative position to actuate the numeral Wheels, printing hammers, mechanism including a .set of latches normally in operative position to actuate the printingthammers, and a movable rod extending across each of said sets of latches, either rod adapted to move its set of latches to inoperative position Without affecting the other.

45. In a typographical computing machine, a series of numeral Wheels, mechanism including a set of latches normally in operative position to actuate the numeral Wheels, printing hammers, mechanism including a set of latches normally in operative position to actuate the printing hammers, a movable rod extending across each of said sets of latches, and mechanism operated by a single shipper adapted to actuate each of said rods to move either set of latches to inoperative position Without affecting the other.

Signed by me at Boston, Massachusetts, this seventeenth day of July, 1912.

GEORGE WALKER. Witnesses:

ROBERT CUSHMAN, CHARLES D. WooDBERRY. 

